Affiliation:
1. Electrotechnical Institute
Abstract
The influence of powder particle size on behaviour of hot plastic deformation, structure and magnetic properties of Nd–Fe–B die-upset magnets have been examined. It was found, that powder particle size strongly affected plastic properties of material during hot deformation process. Precursors made of powder with the smallest particles (d < 32 μm) shown bigger plastic resistance than those made of powder with the larger ones (32 – 88 or 88 – 350 μm). For the same pressing force and temperature, applied within hot plastic deformation process, precursors made of the smallest particle powder allowed to obtain only 56 % deformation, while the another, made of larger particle powder: 65% deformation.
Publisher
Trans Tech Publications, Ltd.
Subject
Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics
Reference7 articles.
1. W. Lipiec, H.A. Davies, The influence of the powder densification temperature on the microstructure and magnetic properties of anisotropic Nd–Fe–B magnets aligned by hot deformation, Journal of Alloys and Compounds, Vol 491, 18 (2010).
2. K. Akioka, O. Kobayashi, T. Yamaguchi, A. Arai, T. Shimoda, Hot workability of R-Fe-B alloys and their magnetic properties, Journal of Applied Physics, 69, (1991), p.5829 – 5831.
3. K. Ohmori, C. D. Gracham Jr., Crystal axis alignment in hot – deformed sintered magnets, Journal of Applied Physics, 70 (1991), p.6351 – 6353.
4. Grünberger W., The solution-precipitation creep - a model for deformation and texturing mechanisms of nanocrystalline Nd–Fe–B alloys, 15th Int. Workshop on Rare Earth Magnets and Their Applicatons, (1998), Dresden, RFN, p.333 – 348.
5. A. Krichner, W. Grünberger, O. Gutfleish, V. Neu, K. H. Müller and L. Schultz, Effect of grain size on magnetic properties and deformation behaviour of Nd–Fe–B magnets made by various preparation routes, 15th Int. Workshop on Rare Earth Magnets and Their Applicatons, (1998).
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